That is tied to poverty, ignorance, likelihood of victimization, and cost. Birth control has not been readily available, but abortions are paid for by Medicaid and other programs.
When you don't have any money, $150 for a doctor visit and $30/mo for birth control is a lot of money.
When you don't have any money, $150 for a doctor visit and $30/mo for birth control is a lot of money.